We talk to the author of Guns, Germs and Steel about his new book on nations in crisis. Jared Diamond argues that personal crises are a good way of thinking about national ones. He tells us about one of his own personal crises and we see whether the lessons really apply to politics. Plus we discuss what's gone wrong with political leadership in the US and we explore what it would take to tackle the global environmental crisis.
After John McDonnell said he was still committed to the socialist transformation of Britain, we ask what that might mean. Does socialism really require the overthrow of capitalism? What's the difference between socialism and communism? And with successful Democratic candidates in the US starting to use the s-word in public, what does socialism have to offer in America? Plus we talk about whether social media and social networks offer the possibility of a new kind of socialism for the twenty-first century. With Helen Thompson, Chris Bickerton and Chris Brooke.